MYSQL必知必会读书笔记第六章之过滤数据_MySQL

SELECT vend_id FROM products where vend_id <>1003

等同于

代码如下:

SELECT vend_id FROM products where vend_id ！=1003

代码如下:

SELECT prod_name，prod_price FROM products WHERE prod_price BETWEEN 5 AND 10;

代码如下:

select * from products
where prod_price is Null;

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